I've tried this S -> e(Epsilon) S -> SASBS S -> SBSAS A -> a B -> b Can someone verify if this is correct.

I'd like to define an unordered set of values using an Extended Backus-Naur Form (EBNF) context free grammar. It's easy to define an unordered list of values in EBNF, for example: value = 'A' | 'B...

I'm having trouble articulating the difference between Chomsky type 2 (context free languages) and Chomsky type 3 (Regular languages). Can someone out there give me an answer in plain English? I'm...